Elastic : Elastic

Here you find all settings for controlling the elastic deformer.

This panel has one subcategory:

RealFlow Scene

In RealFlow | Maya it is possible to use multiple "Scene" trees in the same project. To link an elastic deformer to a scene tree right-click on the field, choose "Set Scene", and select an item from the appearing list.

Linked Objects

Here you specify which objects should be turned into RealFlow | Maya elastic bodies. Click on "Add Object(s)" to select nodes from a list, use "Remove Object(s)" to remove them from the list of rigids.

Linked Domains

All fluid, rigid, and elastic containers inside the field will be affected by the fluid currently selected.

• Connections to other containers have to be established manually by clicking on "Add Object(s)". From the appearing list you can choose other nodes.
• To break a connection select one or more containers from the "Linked Domains" field and click "Remove Object(s)".

Resolution

With this setting you can change the amount of particles. “Resolution” mainly depends on scene scale and emitter scale, but it also affects the material's mass and therefore depends on “Density”, too:

• With “Resolution” set to 1.0, a volume of 1 m x 1 m x 1 m contains exactly 1,000 particles.
• The parameter accepts any positive value.

Density

This parameter is defined as mass per volume unit and is different for each substance. “Density” does not change the fluid's behaviour, but it is possible to mix fluids from different domains. The unit is kilograms per cubic meter, and the density of water is 1,000 kg/m³. Avoid very small values close to 0, because they can lead to instabilities.

Autocollision

"Autocollision" simulates the repulsion forces between different objects inside the same domain to avoid interpenetration. We do not recommend values greater than 1, although the maximum is 10. The substeps and iterations settings in the "Scene" node's → "Global" tab influence how this parameter acts on the body.

Stiffness

Particles inside a rigid object always tend to maintain their original shape. Values, less than 1, introduce a small amount of elastic behavior. We do not recommend values greater than 1, although the maximum is 10. The substeps and iterations settings in the "Scene" node's → "Global" tab influence how this parameter acts on the body.

Damping

Damping smoothens the relative velocities between nearby particles. A small amount of damping helps to stabilize a simulation, while higher values introduce viscosity to the material (= less wobbling).

Max particles

Please enter a value to stop emission at a certain amount of particles. "Max particles" is based on the total amount of emitted particles. Let's say you have entered "50,000". If there are currently 1,000 particles in your scene, but you have already deleted 49,000 particles RealFlow will stop the emission.

Use Initial State

Initial states can be created and activated/deactivated individually for each "Fluid" node (also see → "Initial States"). When

• enabled the initial state will be used
• disabled the initial state will be deactivated temporarily.

Create Initial State

This function lets you set any simulation frame as a new start preset. When you reset the scene the simulation will be starting from the previously defined initial state. The associated initial state file will be written to the scene's catch folder specified under → Scene > Cache. Here is the workflow:

• Simulate (click on the timeline's "Play" button)
• Stop the simulation at any time and press "Create Initial State.
• Set “Use Initial State” to “Yes” if necessary.
• Rewind the timeline to frame 0; the initial state is shown.
• Simulate.

Skinner 

The skinner transfers the position of particles to the vertices of the object(s), attached to a elastic container, and moves/deforms it/them.